Reference Documents - MCU23 0070

TABLE OF CONTENTS
        INTRODUCTION ....................................................................................................................... 1
         1.1        OBJECTIVE & SCOPE ....................................................................................................... 1
         1.2        INFORMATION REQUEST ITEMS ..................................................................................... 1
        SITE CHARACTERISTICS ............................................................................................................ 3
         2.1        LOCATION....................................................................................................................... 3
         2.2        TOPOGRAPHY & DRAINAGE ........................................................................................... 3
        STORMWATER QUANTITY ........................................................................................................ 6
         3.1        LAWFUL POINT OF DISCHARGE ...................................................................................... 6
         3.2        STORMWATER DISCHARGE STRATEGY ........................................................................... 6
         3.3        RATIONAL METHOD CALCULATION ................................................................................ 6
         3.4        PRE-DEVELOPMENT SITE XP-STORM .............................................................................. 7
                    3.4.1           CATCHMENT DATA ....................................................................................... 7
                    3.4.2           RAINFALL DATA ............................................................................................ 7
                    3.4.3           HYDROLOGICAL LOSSES ............................................................................... 7
                    3.4.4           BX FACTOR ................................................................................................... 7
                    3.4.5           EXISTING PEAK DISCHARGE .......................................................................... 7
         3.5        POST-DEVELOPMENT SITE XP-STORM............................................................................ 8
                    3.5.1           CATCHMENT DATA ....................................................................................... 8
                    3.5.2           RAINFALL DATA, HYDROLOGICAL LOSSES & BX FACTOR .............................. 8
                    3.5.3           DETENTION TANK ......................................................................................... 9
                    3.5.4           POST-DEVELOPMENT PEAK DISCHARGE ...................................................... 9
                    3.5.5           DETENTION TANK RESULTS .......................................................................... 9
         3.6        DOUGLAS LANE ROAD FLOW CALCULATION ................................................................ 10
                    3.6.1           PEAK FLOW CALCULATION ......................................................................... 10
                    3.6.2           ROAD CAPACITY CALCULATION .................................................................. 10
        STORMWATER QUALITY ........................................................................................................ 11
         4.1        CONSTRUCTION PHASE STORMWATER QUALITY MANAGEMENT ............................... 11
                    4.1.1           INTRODUCTION .......................................................................................... 11
                    4.1.2           POLLUTANTS .............................................................................................. 11
                    4.1.3           WATER QUALITY OBJECTIVES ..................................................................... 11
                    4.1.4           STORMWATER QUALITY MANAGEMENT STRATEGY .................................. 12
                    4.1.5           MONITORING & MAINTENANCE ................................................................ 12
                    4.1.6           RESPONSIBILITY & REPORTING ................................................................... 12
         4.2        OPERATIONAL PHASE STORMWATER QUALITY MANAGEMENT .................................. 13
         4.3        WATERWAY STABILITY MANAGEMENT ........................................................................ 13
        CONCLUSION & RECOMMENDATIONS ................................................................................... 14
        DISCLAIMER .......................................................................................................................... 15

SITE BASED STORMWATER MANAGEMENT PLAN – Revision B                                                      36 & 38 DUKE STREET, SUNSHINE BEACH